Endress+Hauser Prosonic T FMU 130 - Set Current Output; Notes on Current Output; Continuous Current Output; Switch Current Output

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Prosonic T - FMU 130, 131, 230, 231, 232
Endress+Hauser
Set Current Output
Notes on Current Output:
• The current output must be set in % or in the units of linearization.
• Measuring Range Spread: The beginning and end of the current range can be set
as required with partial ranges of the total span also being assigned.
• The current output can also be inverted so that the value in V0H5 is greater than that
in V0H6. An increased measured value will decrease the signal current.
• Output Damping: The effect of the output damping is to attenuate the analog output
and the measuring indication on the display of the Prosonic T. When the liquid surface
is not steady, a steady reading can be obtained with the aid of the output damping.
0 s = without damping
1 to 255 s = with damping
• Current on Fault (V0H7)
• 4 mA Threshold:
The 4 mA threshold ensures that no value falls below this during measurement.
Errors and Warnings in V9H0
• E620: The current output is outside the set range (smaller than 3.8 mA, greater 20.5
mA). Check the calibration and settings of the current output.
Two Types of Measurement
➀ Continuous Current Output
The current from 4 to 20 mA is assigned
to a measuring range.
➁ Switch Current Output
The current values 4 and 20 mA or 8 and
16 mA are set as switchpoints.
4-wire 2-wire
4 to 20 mA, 4/20 mA, 8/16 mA
-10% 2.4 mA 3.8 mA
+110% 22 mA 22 mA
Height
4 mA 20 mA
V0H6 90%
V0H5 10%
# VH Entry Text
1 V8H1 e.g. 0 H Current output
0: linear 4 to 20 mA
1: linear 4 to 20 mA
with 4 mA threshold
2 V0H5 e.g. 10% H Level for 4 mA
3 V0H6 e.g. 90% H Level for 20 mA
4 V0H4 e.g. 20 s H Output damping
5 V0H7 e.g. 1 H Output on fault
0: -10%
1: +110%
2: HOLD (holds last
measured value)
# VH Entry Text
1 V8H1 e.g. 2 H Current output
2: digital 4/20 mA
3: digital 8/16 mA
2 V0H5 e.g. 10% H Switchpoint min.
4 or 8 mA
3 V0H6 e.g. 90% H Switchpoint max.
20 or 16 mA
4 V0H4 e.g. 10 s H Output damping
5 V0H7 e.g. 1 H Output on fault
0: -10%
1: +110%
2: HOLD (holds last measured
value)
Height
V0H6 90%
V0H5 10%
4 mA 20 mA
8 mA 16 mA